Heart Rate Changes After Peripartum Cardiomyopathy Diagnosis

Heart rate issues

Hello, doctor.
I was diagnosed with peripartum cardiomyopathy, and prior to my pregnancy, my heart rate was consistently between 80-90 beats per minute, and I did not feel any discomfort at that time.
It was only after my diagnosis of peripartum cardiomyopathy postpartum that the doctor prescribed Carvedilol for me.
However, after taking it for just 10 days, my heart rate has been in the 60s, occasionally dropping to 57 or 58.
I don’t understand why my heart rate, which was consistently 80-90, has dropped so low after only 10 days of taking Carvedilol.
This is a bit concerning for me, especially since it sometimes goes down to the 50s (without any discomfort), and I worry that my heart rate might slow down too much and stop...
I hope you understand my concern.
During the day, I take one tablet of Quetiapine and Lurasidone, and at night, I take Jing An Ning and Stivarga.
I don’t think these medications are the cause of my low heart rate.

Ms. Chen, 20~29 year old female. Ask Date: 2023/02/28

Dr. He Dongjin reply Cardiology

Hello, it is normal for your heart rate to slow down, especially in the 50s range, which is quite common.
We treat people, not numbers.
It's normal for the heart rate to decrease, but it shouldn't stop completely.
Changhua Hospital cares about you.

Reply Date: 2023/02/28

More Info

Understanding heart rate changes after a diagnosis of peripartum cardiomyopathy (PPCM) can be quite complex, especially when considering the physiological changes that occur during and after pregnancy. It’s important to recognize that PPCM is a form of heart failure that occurs during the last month of pregnancy or within five months after delivery. This condition can lead to significant alterations in heart function and rhythm, which may explain the changes you are experiencing.

Before your diagnosis, your heart rate was consistently in the range of 80-90 beats per minute (bpm), which is considered normal for many individuals. However, after being diagnosed with PPCM and starting treatment with medications such as Carvedilol (康肯), it’s not uncommon to observe a decrease in heart rate. Carvedilol is a beta-blocker that is often prescribed to manage heart failure and can lead to a reduction in heart rate as it works to decrease the workload on the heart and improve its efficiency.

The heart rate you are experiencing now, in the 60s and occasionally dropping to the 50s, can be a normal response to the medication, especially in the context of heart failure management. Beta-blockers are known to lower heart rate as part of their therapeutic effect. While a heart rate below 60 bpm (bradycardia) can be concerning, it is not unusual for individuals on beta-blockers, particularly if you are asymptomatic (not experiencing symptoms like dizziness, fatigue, or palpitations).
It’s also worth noting that during pregnancy and the postpartum period, your body undergoes significant hormonal and physiological changes that can affect heart function. The heart may adapt to these changes, and the medications you are taking can further influence your heart rate. The fact that you are not experiencing any discomfort or symptoms associated with low heart rates is a positive sign, but it’s essential to monitor your condition closely.

If you are feeling anxious about your heart rate, it is advisable to maintain open communication with your healthcare provider. They can assess whether your current heart rate is appropriate given your treatment plan and overall health status. They may also want to perform additional tests, such as an electrocardiogram (ECG) or echocardiogram, to ensure that your heart is functioning well and that there are no other underlying issues contributing to your symptoms.

In summary, the decrease in your heart rate after starting Carvedilol is likely a result of the medication’s effects on your heart, which is common in patients with heart failure. As long as you remain asymptomatic and your healthcare provider is monitoring your condition, there may be no cause for alarm. However, if you have any concerns or if your symptoms change, do not hesitate to reach out to your doctor for further evaluation and guidance. Your health and peace of mind are paramount, especially during this critical period of recovery from PPCM.

Similar Q&A

Managing Rapid Heartbeat After Surgery: When to Seek Cardiac Care

Hello Doctor: I underwent an emergency cesarean section on April 11 due to preeclampsia. During my postpartum recovery, I have been taking antihypertensive medication, specifically one Adapine S.R. 30 mg tablet in the morning and four Atanaal 5 mg capsules throughout the day. I h...

Dr. He Dongjin reply Cardiology
Hello, if you measure your pulse and it is regular without any significant discomfort, you can observe it for now, as it may be your body still adapting to the postpartum situation. It is advisable to supplement with nutrition and hydration. However, if you notice an irregular pu...

Understanding Peripartum Cardiomyopathy: Concerns About EF Changes

Hello Doctor, I was diagnosed with peripartum cardiomyopathy at the end of November last year, and my ejection fraction (EF) was 48 at that time. I took Carvedilol, and in February this year, an ultrasound showed my EF improved to 54. The doctor said everything was fine and that ...

Dr. He Dongjin reply Cardiology
Hello, the probability is low. Unless you have new symptoms, there's no need to worry yourself unnecessarily. Everything is fine. Changhua Hospital cares about you.

Understanding Peripartum Cardiomyopathy: Insights and Prognosis for New Mothers

Have you encountered many patients with peripartum cardiomyopathy, doctor? My previous physician mentioned that they rarely see such cases, and I'm curious about the outcomes for the patients you've encountered. After all, receiving such a diagnosis after childbirth, wh...

Dr. He Dongjin reply Cardiology
Hello, everything you encountered has gone smoothly. Don't worry, everything is fine. Changhua Hospital cares about you.

Understanding Heart Rhythm Disorders: Causes, Symptoms, and Treatments

I apologize for the lengthy message, but I would like to ask about my condition. Previously, I often felt discomfort in my heart, experiencing sudden episodes of rapid heartbeat. After frequent occurrences, I went to the hospital for a 24-hour Holter ECG, which showed the followi...

Dr. He Dongjin reply Cardiology
Hello, it seems that the symptoms you are experiencing are likely due to autonomic nervous system dysregulation and anxiety, which can lead to panic attacks. This is not indicative of a worsening heart condition, and you are not at risk of sudden death. Please do not scare yourse...